81a8d0714b
Direct messages between peers are now end-to-end encrypted. The
broker only ever sees {nonce, ciphertext} — plaintext lives on the
two endpoints.
apps/cli/src/crypto/envelope.ts:
- encryptDirect(message, recipientPubkeyHex, senderSecretKeyHex)
→ {nonce, ciphertext} via crypto_box_easy, 24-byte fresh nonce
- decryptDirect(envelope, senderPubkeyHex, recipientSecretKeyHex)
→ plaintext or null (null on MAC failure / malformed input)
- ed25519 keys (from Step 17) are converted to X25519 on the fly via
crypto_sign_ed25519_{pk,sk}_to_curve25519 — one signing keypair
covers both signing + encryption roles.
BrokerClient.send():
- if targetSpec is a 64-hex pubkey → encrypt via crypto_box
- else (broadcast "*" or channel "#foo") → base64-wrapped plaintext
(shared-key encryption for channels lands in a later step)
InboundPush now carries:
- plaintext: string | null (decrypted body, null if decryption failed
OR it's a non-direct message)
- kind: "direct" | "broadcast" | "channel" | "unknown"
MCP check_messages formatter reads plaintext directly.
side-fixes pulled in during 18a:
- apps/broker/scripts/seed-test-mesh.ts now generates real ed25519
keypairs (the previous "aaaa…" / "bbbb…" fillers weren't valid
curve points, so crypto_sign_ed25519_pk_to_curve25519 rejected
them). Seed output now includes secretKey for each peer.
- apps/broker/src/broker.ts drainForMember wraps the atomic claim in
a CTE + outer ORDER BY so FIFO ordering is SQL-sourced, not
JS-sorted (Postgres microsecond timestamps collapse to the same
Date.getTime() milliseconds otherwise).
- vitest.config.ts fileParallelism: false — test files share
DB state via cleanupAllTestMeshes afterAll, so running them in
parallel caused one file's cleanup to race another's inserts.
- integration/health.test.ts "returns 200" now uses waitFullyHealthy
(a 200-only waiter) instead of waitHealthyOrAny — prevents a race
with the startup DB ping.
verified live:
- apps/cli/scripts/roundtrip.ts (direct A→B): ciphertext in DB is
opaque bytes (not base64-plaintext), decrypted correctly on arrival
- apps/cli/scripts/join-roundtrip.ts (full join → encrypted send):
PASSED
- 48/48 broker tests green
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
@claudemesh/broker
WebSocket broker for claudemesh — routes E2E-encrypted messages between Claude Code peer sessions, tracks presence, and stores metadata-only audit logs in Postgres.
What it is
A standalone Bun-runtime WebSocket server that sits between Claude Code sessions. Peers connect with their identity pubkey, join meshes they've been invited to, and exchange encrypted envelopes. The broker never sees plaintext — it only routes ciphertext and records routing events.
Running locally
# from the repo root
pnpm --filter=@claudemesh/broker dev # watch mode
pnpm --filter=@claudemesh/broker start # production
Required env vars
| Var | Default | Purpose |
|---|---|---|
BROKER_PORT |
7900 |
Single port for HTTP routes + WebSocket upgrade |
DATABASE_URL |
— | Postgres connection string (shared with apps/web) |
STATUS_TTL_SECONDS |
60 |
Flip stuck-"working" peers to idle after this TTL |
HOOK_FRESH_WINDOW_SECONDS |
30 |
How long a hook signal beats JSONL inference |
Routes (single port)
| Path | Protocol | Purpose |
|---|---|---|
/ws |
WebSocket | Authenticated peer connections |
/hook/set-status |
HTTP POST | Claude Code hook scripts report status |
/health |
HTTP GET | Liveness probe |
Depends on
@turbostarter/db— Drizzle/Postgres schema (uses themeshpgSchema)@turbostarter/shared— cross-package utilities
Deployment
Runs as a separate process (not inside Next.js). Intended deployment targets:
Fly.io, Railway, or Coolify on the surfquant VPS. WebSocket server must be
reachable at ic.claudemesh.com.
Status
Scaffold only. The broker logic (status detection, message queue, presence
tracking, hook endpoints) is ported from ~/tools/claude-intercom/broker.ts
in a follow-up step.